On what factors do the magnetic field produced by a straight current-carrying conductor depend ?

Explanation

i] Magnitude of current passing through the conductor: The magnitude of the magnetic field produced at a given point is directly proportional to the current passing through the conductor . B `prop` l
ii] Distance from the wire : The magnitude of the magnetic field produced by a given current in the wire is inversely proportional to the distance from the wire B `prop` l/r